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Qingboy
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Member since ‎03-26-2016
‎12-11-2020
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【原创】L2转发原理详解

06-02-2019
对于交换芯片来说，L2转发是一个最基本的功能。L2功能主要包括ingress过滤、MAC学习和老化、根据MAC+VLAN转发、广播与洪泛、生成树控制等基本功能。从端口进入交换芯片的包首先检查TAG，对于tagged包，判断是否是802.1p的包，（802.1p的包vid为0），对于untagged的包和802.1p的包，根据系统配置加上tag（这些配置包括：基于MAC的vlan、基于子网的vlan、基于协议的vlan和基于端口的vlan）。经过这一步以后，到交换芯片内部的包都变成802.1Q的t...
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Member Since ‎03-26-2016 08:41 AM
Date Last Visited ‎12-11-2020 03:51 AM
Posts 2
Total Helpful Votes Received 90
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